.CheckBox {
    width: 20px;
    height: 20px;
    margin: 0;
    background: url();
    display: inline-block;
    -webkit-appearance: none;
    cursor: pointer;
}

.CheckBox.checked {
    background: url();
}

.CheckBox.disabled {
    background: url();
    cursor: default;
}

.CheckBox.checked.disabled {
    background: url();
}